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2 vulnerabilities found for weechat by weechat

CVE-2026-53525 (GCVE-0-2026-53525)
Vulnerability from cvelistv5
Published
2026-08-21 22:19
Modified
2026-08-25 16:46
Severity ?
7.4 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
CWE
  • CWE-208 - Observable Timing Discrepancy
Summary
WeeChat (Wee Enhanced Environment for Chat) is a free chat client. In versions 0.3.1 through 4.9.0, the WeeChat relay authentication uses non-constant-time string comparison functions (weechat_strcasecmp and strcmp) to verify password hashes and plaintext passwords. An attacker can exploit timing differences to extract the server-computed hash character by character, then authenticate using the correct hash without knowing the password. Version 4.9.1 fixes the issue.
References
Impacted products
Vendor Product Version
weechat weechat Version: >= 0.3.4, < 4.9.1
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CVE-2026-53524 (GCVE-0-2026-53524)
Vulnerability from cvelistv5
Published
2026-08-21 22:18
Modified
2026-08-24 20:09
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-409 - Improper Handling of Highly Compressed Data (Data Amplification)
Summary
WeeChat (Wee Enhanced Environment for Chat) is a free chat client. In versions 4.3.0 through 4.9.0, the WeeChat relay module's WebSocket permessage-deflate decompression function relay_websocket_inflate() has no upper bound on output size. An authenticated relay user can send a small compressed WebSocket frame (~100 bytes) that decompresses to gigabytes, exhausting all server memory and crashing the entire WeeChat process. The api protocol enables permessage-deflate and requires authentication before WebSocket upgrade. Version 4.9.1 patches the issue.
References
Impacted products
Vendor Product Version
weechat weechat Version: >= 4.3.0, < 4.9.1
 Create a notification for this product.
Show details on NVD website

To clipboard 

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